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Finding the Fourth Proportional to 8,901.32, 12,269.68 and 7,009.90

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Solution

The fourth proportional to 8,901.32, 12,269.68 and 7,009.90 is: 9,662.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.32 : 12,269.68 = 7,009.90 : x
  2. Step 2: Convert to fraction form
    8,901.32/12,269.68 = 7,009.90/x
  3. Step 3: Cross multiply
    8,901.32x = 12,269.68 × 7,009.90
  4. Step 4: Simplify right side
    8,901.32x = 86,009,181.63
  5. Step 5: Solve for x
    x = 86,009,181.63/8,901.32
  6. Step 6: Final answer
    x = 9,662.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.